THE NATURAL HISTORY OF METALS. 1. Metals 68 2. Gold 69 3. What was the first recommendation of gold 71 4. The origin of gold rings _ib._ 5. The quantity of gold possessed by the ancients 75 6. The right or wearing gold rings 76 7. The decuries of the judges 82 8. Particulars connected with the equestrian order 83 9. How often the name of the equestrian order has been changed 85 10. Gifts for military services, in gold and silver 86 11. At what period the first crown of gold was presented _ib._ 12. Other uses made of gold, by females 87 13. Coins of gold. At what periods copper, gold, and silver, were first impressed. How copper was used before gold and silver were coined. What was the largest sum of money possessed by any one at the time of our first census. How often, and at what periods, the value of copper and of coined money has been changed 88 14. Considerations on man’s cupidity for gold 91 15. The persons who have possessed the greatest quantity of gold and silver 93 16. At what period silver first made its appearance upon the arena and upon the stage 94 17. At what periods there was the greatest quantity of gold and silver in the treasury of the Roman people 95 18. At what period ceilings were first gilded _ib._ 19. For what reasons the highest value is set upon gold 96 20. The method of gilding 98 21. How gold is found 99 22. Orpiment 104 23. Electrum 105 24. The first statues of gold _ib._ 25. Eight remedies derived from gold 106 26. Chrysocolla 107 27. The use made of chrysocolla in painting 108 28. Seven remedies derived from chrysocolla 110 29. The chrysocolla of the goldsmiths, known also as santerna _ib._ 30. The marvellous operations of nature in soldering metallic substances, and bringing them to a state of perfection 111 31. Silver _ib._ 32. Quicksilver 113